Hi, To advertise in facebook and other social media, you need to first join some groups that allows to promote affiliate marketing. You should try joining groups which have high number of people joining every day. This will increase the chances of your ad to be looked by them. Your ad text should also be appealing, so that other members goes through your ad even if they do not join your team. It is always better if you put your main ad in a blog and refer the blog link in these social media.